What is Ultrex ? Is it a brand ? a process ? I read Ultrex micarta, Ultrex G10 Hmmmmm I see
Ultrex™ is a family of composite materials, specifically designed for aesthetic applications.
I confused this with Ultem that has been around since the 1980s and is used for guitar picks (a lot,) aircraft interiors, medical equipment etc.... Ultem resin is made by Sabic in Mt. Vernon Indiana, and Cartagena Spain. I am not sure if it's made in Singapore. I might like it. I might as well talk about what little I know/think I know about it.
It's strong and hard, it may not be the most impact resistant (brittle) but maybe it's more than good enough I don't know.
It's also very lightweight, impervious to a large variety of chemicals as well as UV resistant. One of it's most strong points is it can withstand repeated autoclave sterilization cycles without breaking down (high heat resistance mid 300s F.)
Someone has said it has good grip even when smooth and more so when wet.
You can get this stuff in any color AS LONG AS IT'S A SHADE OF TRANSLUCENT AMBER ok amber only. It's not porous so you can not dye it. I actually like the color.
If you really want to sterilize a knife provided everything else but the scales are metal this stuff may be what you want. Autoclave is really the way for almost total sterilization.
I am not sure about this stuff (Ultem) being the best for resisting impact. Ultem knife scales are expensive. Ultem may be new to knife making but the material has been around a while.
Advantages vs disadvantages I guess it all depends what one wants and/or needs. Micarta, G10/G11, Carbon fiber, Wood, Zytel, Utem, and yes even Terotuf they all have their place. I guess Ultrex too.